<The type of correlation that you describe is shown in the article,
The Age of the Universe is a Function of time. Donald E. Simanek
describes how scientific estimates of the age of the earth and the
universe show a consistent tendency to increase at an increasing rate
as time goes on. The article gives a chronology of the ages of the
earth and universe and plots the figures on a graph showing that over
time the figure calculated for the age of the universe increases.
The following is a list of dates, the method of calculation and links
to where more information can be found.
John Lightfoot (1602 ? 1675)
Constructed a chronology from biblical genealogies and calculated that
the world was created at the equinox in September of 3298 BC.
James Ussher (1581 ? 1656)
Calculated a creation day of Sunday 23 October 4004 BC.
Correlated various texts.
1928, 1929, 1930 ( I have come across various dates) ? 2 billion years
Edwin Hubble (1889-1953)
Red shift of different stars and galaxies.
1947 ? 2-3 billion years
Uses Hubbles data.
George Gamow (1904-68)
1952 ? 1 to 10 billion years
Bart Jan Bok (1906-83)
1987 - 8 billion years
Measured the ratios of thorium (Th) and neodymium (Nd) in the sun and
20 nearby stars spectroscopically.
Published in Nature
This site has references to various articles about the age of the universe.
1995 ? 9.5 billion
Nature 7 September 1995
10 billion years
Studied Cephoid variable stars
1995 - 8-12 billion years.
Distance scale measurements and stellar evolution theory 8 ?12 billion years.
Distance to galaxy M100
Globular clusters and hubble time
1997 ? 13 ? 14 billion years
HST Key Project on the Extragalactic Distance Scale
13 to 14 billion years.
Used supernovae in distant galaxies to calculate the distances to
those galaxies to calulate the universe?s rate of expansion and, thus
1999 ?13.4 billion years
Australian Charles Lineweaver of the University of New South Wales
calculated that the age of the universe is 13.4 billion plus/minus 1.6
billion. The calculation are based on young, independent observations
from which US researchers around Nehta Bahcall of the Princeton
university (new Jersey) newly calculated the form and extension speed.
Published in Science (US magazine). 23 May 1999.
12 billion years.
Cepheids Between 12 and 13.5 billion years.
2001 ? 12.5 billion years.
Star date: The minimum age of the Universe is calculated using a new
radiometric approach. New Scientist. 7 February 2001.
2001 ? 12.5 billion
February 7, 2001, Roger Cayrel et al measured amounts of the radioactive
elements thorium and uranium in an ancient star named CS31082-001
using a technique called radioactive cosmochronometry. "The ages of the
oldest stars in the galaxy indicate when star formation began and provide a
minimum age for the universe," Cayrel said. They calculated that
CS31082-001 is about 12.5 billion years old, with an error factor of
three billion years.
Cayrel, R et al. Measurement of Stellar age from uranium decay.
Nature. 8 February 2001. Vol 409, No. 6821.
Kilkis 14.8 billion
2002 - 12 to 13 billion years.
Harvey Richer of the University of British Columbia in Vancouver.
Studied the cooling of white dwarfs.
2003 - 13.7 billion years
WMAP Spacecraft Maps the Entie Cosmic Microwave Sky with Unprecedented Precision.
Physics Today. Vol 56, No. 4. April 2003.
<"the age of the universe" billion>
<"age of the universe" history>
<Hope this helps.>